GB1244276A - Cryosurgical instrument - Google Patents

Cryosurgical instrument

Info

Publication number
GB1244276A
GB1244276A GB2413869A GB2413869A GB1244276A GB 1244276 A GB1244276 A GB 1244276A GB 2413869 A GB2413869 A GB 2413869A GB 2413869 A GB2413869 A GB 2413869A GB 1244276 A GB1244276 A GB 1244276A
Authority
GB
United Kingdom
Prior art keywords
piston
probe
heat exchanger
pressure release
release valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2413869A
Inventor
Antony Julian Croft
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB2413869A priority Critical patent/GB1244276A/en
Publication of GB1244276A publication Critical patent/GB1244276A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/02—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
    • A61B2018/00041—Heating, e.g. defrosting

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biomedical Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Otolaryngology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)

Abstract

1,244,276. Cryosurgical instrument. A. J. CROFT. 3 April, 1970 [12 May, 1969], No. 24138/69. Heading A5R. A cryosurgical instrument comprises a probe 3 cooled by the controlled evaporation of liquid nitrous oxide. The flow of N 2 O from the reservoir 19 into the heat exchanger 25 is regulated by a capillary valve 15 and a needle 5 attached to a piston 6. In operation, a pressure release valve 13 above the piston is opened causing the piston to rise until it is obstructed by stop 7. Liquid N 2 O flows into the heat exchanger where it evaporates cooling the probe to -60‹C in a few seconds. If the pressure release valve is closed, vapour passing from the reservoir through a small hole 11 in the piston equalises the pressure above and below the piston so that a spring 8 is able to close the needle valve. A temperature sensor may be attached to the heat exchanger and the operation of the pressure release valve triggered by a signal received from the sensor. In this way control of the probe temperature may be made automatic. The probe may be provided with an electric heating coil that permits rapid heating after cooling.
GB2413869A 1969-05-12 1969-05-12 Cryosurgical instrument Expired GB1244276A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2413869A GB1244276A (en) 1969-05-12 1969-05-12 Cryosurgical instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2413869A GB1244276A (en) 1969-05-12 1969-05-12 Cryosurgical instrument

Publications (1)

Publication Number Publication Date
GB1244276A true GB1244276A (en) 1971-08-25

Family

ID=10206990

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2413869A Expired GB1244276A (en) 1969-05-12 1969-05-12 Cryosurgical instrument

Country Status (1)

Country Link
GB (1) GB1244276A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2477406A1 (en) * 1980-03-06 1981-09-11 Commissariat Energie Atomique Surgical cryoprobe for destroying diseased cell tissue esp. cancer - can fit inside endoscope for internal surgery
FR2486798A1 (en) * 1980-07-15 1982-01-22 Vyzk Ustav Silnoproude Elekt CRYOTHERAPY INSTRUMENT
US9011420B2 (en) 2010-10-27 2015-04-21 Medtronic Cryocath Lp Compatible cryogenic cooling system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2477406A1 (en) * 1980-03-06 1981-09-11 Commissariat Energie Atomique Surgical cryoprobe for destroying diseased cell tissue esp. cancer - can fit inside endoscope for internal surgery
FR2486798A1 (en) * 1980-07-15 1982-01-22 Vyzk Ustav Silnoproude Elekt CRYOTHERAPY INSTRUMENT
US9011420B2 (en) 2010-10-27 2015-04-21 Medtronic Cryocath Lp Compatible cryogenic cooling system
US9883900B2 (en) 2010-10-27 2018-02-06 Medtronic Cryocath Lp Method of operating a medical cooling system

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